Verglimit De-Icing Chemical Asphalt Additive. Construction Report

摘要

The project examines the effectiveness and feasibility of using the Verglimit de-icing chemical asphalt additive to minimize pavement icing problems. The Verglimit additive consists of calcium chloride flakes encapsulated in linseed oil. It was introduced into the bituminous mix at 5% of the aggregate by weight. The project consisted of a 1 1/2 inch Verglimit-modified ID-2 wearing overlay on a 2-inch binder course. No problems were encountered during construction. Skid tests indicate the skid resistance of the Verglimit-modified ID-2 is only slightly lower than that of the adjacent sections. The cost of the Verglimit-modified ID-2 material is three times that of standard ID-2 material. However, a reduction in application of de-icing agents and increased safety may justify this cost.